Document Detail

Objective evaluation of small bowel and colonic transit time using pH telemetry in athletes with gastrointestinal symptoms.
MedLine Citation:
PMID:  15273191     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Gastrointestinal (GI) disturbances are often reported by long distance runners and are more common in women, particularly after prolonged high intensity exercise. OBJECTIVES: To determine whether these symptoms could be associated with alterations in GI motility. METHODS: Small bowel and colonic transit were measured using pH telemetry in a group of 11 female athletes (age 22 to 53 years), six of whom experienced lower GI symptoms during exercise. Subjects participated in two experimental sessions: a control measurement, where small bowel transit was estimated during a rest period (R) of six hours; and an exercise session (E), where small bowel transit was measured during a one hour period of high intensity exercise (cross country running) at >70% VO(2)max. Colonic transit was estimated indirectly from determinations of whole gut transit time by radio-opaque marker. RESULTS: Small bowel transit time was 3.5 to 10.6 h (R) and 3.0 to 8.7 h (E) in asymptomatic athletes, versus 4.0 to 6.6 h (R) and 4.6 to 7.3 h (E) in symptomatic athletes (NS). Colonic transit time was 35.0 to 62.5 h (R) and 30.5 to 70.9 h (E) in asymptomatic athletes versus 20.4 to 42.9 h (R) and 21.5 to 67.2 h (E) in symptomatic athletes (NS). CONCLUSIONS: Small bowel and colonic transit times were similar in the two groups in the rest and exercise sessions. The diarrhoea seen in this study did not result from accelerated colonic transit. Other mechanisms must be sought.
K A Rao; E Yazaki; D F Evans; R Carbon
Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  British journal of sports medicine     Volume:  38     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2004 Aug 
Date Detail:
Created Date:  2004-07-26     Completed Date:  2005-02-28     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  482-7     Citation Subset:  IM    
Department of Sports Medicine, Queen Mary and Westfield College, London E1, UK. <>
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MeSH Terms
Colon / physiology*
Diarrhea / physiopathology
Fecal Incontinence / physiopathology
Gastrointestinal Transit / physiology*
Hydrogen-Ion Concentration
Intestine, Small / physiology*
Middle Aged
Muscle Cramp / physiopathology
Running / physiology*
Telemetry / methods

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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